公开(公告)号：US12241735B2

公开(公告)日：2025-03-04

申请号：US17416232

申请日：2019-03-04

Applicant: Arcam AB

Inventor： Anders Snis

IPC: G01B21/00 ,  B22F10/28 ,  B22F12/90 ,  B29C64/153 ,  B29C64/393 ,  G01B21/08 ,  B22F10/36 ,  B22F10/368 ,  B22F12/49 ,  B22F12/67

Abstract: Disclosed herein are methods for estimating a powder layer thickness in an additive manufacturing machine when forming a three-dimensional article layer by layer. The method comprises applying a first powder layer and selectively melting the first powder layer and thereafter measuring the temperature of the first powder layer at a plurality of times. The method further comprises providing a mathematical function giving a reference temperature as a function of time based on the measured temperatures of the first powder layer, applying a second powder layer on top of the first powder layer and measuring the temperature of the second powder layer at a predetermined time, and estimating the powder layer thickness of the second powder layer based on the measured temperature of the second powder layer and the reference temperature calculated by means of the mathematical function for the predetermined time point.

公开(公告)号：US20250041942A1

公开(公告)日：2025-02-06

申请号：US18228198

申请日：2023-07-31

Applicant: Arcam AB

Inventor： Markus Ramsperger ,  John Bondestam Malmberg ,  Alexander Dahl

IPC: B22F10/31 ,  B22F10/36 ,  B22F10/80 ,  B22F12/41 ,  B22F12/90 ,  B33Y50/00

Abstract: A method for determining a melt strategy for an additive manufacturing system comprises: receiving geometry data corresponding to a surface of a powder layer; populating the geometry data with melting points; assigning at least one treatment action to each melting point; assigning a melt parameter and a prerequisite thermal characteristic to each treatment action; generating a preliminary list; creating a revised order comprising a plurality of sequential unpopulated items; and populating the revised order by: identifying an earliest unpopulated item, determining if any treatment action comprises prerequisite thermal characteristics satisfied for a time of the earliest unpopulated item, assigning an assignment to the earliest unpopulated item; removing the treatment action comprising prerequisite thermal characteristics which are satisfied for the sequential time of the earliest unpopulated item from the preliminary list, classifying the earliest unpopulated item as a populated item, and returning to identifying the earliest unpopulated item.

公开(公告)号：US12090552B2

公开(公告)日：2024-09-17

申请号：US17079975

申请日：2019-02-26

Applicant: ARCAM AB

Inventor： Lars Löwgren ,  Kristofer Karlsson

IPC: B22F12/20 ,  B22F10/28 ,  B22F10/30 ,  B22F12/00 ,  B22F12/50 ,  B22F12/60 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/30 ,  B22F12/90

CPC classification number: B22F12/50 ,  B22F10/28 ,  B22F12/20 ,  B22F12/224 ,  B22F12/226 ,  B22F12/60 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B22F12/30 ,  B22F12/90 ,  B22F2999/00 ,  B22F12/60 ,  B22F12/10 ,  B22F12/20

Abstract: Provided is an additive manufacturing apparatus for additive manufacturing of three dimensional objects by selectively solidifying a powder material layer by layer in a process chamber, wherein the apparatus comprises a powder distributor movable across a build area of a build tank for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured and a control unit adapted to repeat the steps of applying and selectively solidifying until the object is completed, wherein at least one support structure for supporting the powder distributor and/or a bellows assembly associated there-with is connectable to a cooling/heating media supply outside the process chamber and the support structure and/or the bellows assembly is adapted for transporting the cooling/heating media to and from the powder distributor. Certain embodiments further or alternatively include a bellows assembly connected or connectable to a cooling/heating media supply positioned outside the process chamber, the bellows assembly being configured for transporting the cooling/heating media to and from the powder distributor.

公开(公告)号：US12036731B2

公开(公告)日：2024-07-16

申请号：US17243819

申请日：2021-04-29

Applicant: Arcam AB

Inventor： Isak Elfstroem ,  Mattias Fager

IPC: B22F10/36 ,  B22F10/00 ,  B22F10/28 ,  B22F12/49 ,  B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G05B15/02 ,  B22F10/38 ,  B22F12/44 ,  B22F12/45

CPC classification number: B29C64/153 ,  B22F10/00 ,  B22F10/28 ,  B22F10/36 ,  B22F12/49 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G05B15/02 ,  B22F10/385 ,  B22F12/44 ,  B22F12/45 ,  B29K2995/0005 ,  Y02P10/25

Abstract: Various embodiments of the present invention relate to a method of using of a focus lens in additive manufacturing for forming a three-dimensional article through successive fusion, with a high energy beam, of parts of at least one layer of a powder bed provided on a work table, which parts correspond to successive cross sections of the three dimensional article, said method comprising the step of: using said focus lens for varying a spot size of said high energy beam on said powder bed as a function of an already fused thickness of said three-dimensional article below said powder which is to be fused. The invention is also related to a method for forming a three dimensional article.

公开(公告)号：US11981071B2

公开(公告)日：2024-05-14

申请号：US17127124

申请日：2020-12-18

Applicant: ARCAM AB

Inventor： Karl Hansson

IPC: B29C64/00 ,  B22F12/33 ,  B29C64/153 ,  B29C64/393 ,  B33Y30/00

CPC classification number: B29C64/153 ,  B22F12/33 ,  B29C64/393 ,  B33Y30/00 ,  B22F2999/00

Abstract: Adjustable guide systems and additive manufacturing systems incorporating the same are disclosed. An adjustable guide system includes a first arm support coupled to a first end of a powder distributor in an additive manufacturing system, a second arm support coupled to a second end of the powder distributor opposite the first end, a plurality of shuttles, and a plurality of guide rails. Each one of the plurality of shuttles is pivotally coupled to the first arm support or the second arm support via one or more link arms. Each one of the plurality of guide rails supports a corresponding one of the plurality of shuttles thereon and allows each shuttle to move along the respective guide rail.

公开(公告)号：US11925981B2

公开(公告)日：2024-03-12

申请号：US16915276

申请日：2020-06-29

Applicant: Arcam AB

Inventor： Carl Hellestam

IPC: B22F10/00 ,  B22F1/142 ,  B22F10/10 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/02

CPC classification number: B22F10/00 ,  B22F1/142 ,  B29C64/153 ,  B29C64/268 ,  B29C64/393 ,  B22F10/10 ,  B22F2203/11 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/02

Abstract: Devices, systems, and methods for selectively sintering a powder layer in additive manufacturing processes to achieve a desired heat conductivity are disclosed. A method includes distributing a powder layer in a build chamber, selectively sintering the powder layer to form a plurality of sintered areas and a plurality of non-sintered areas based on a thermal model, and melting a subset of the plurality of sintered areas.

公开(公告)号：US11806800B2

公开(公告)日：2023-11-07

申请号：US17018439

申请日：2020-09-11

Applicant: Arcam AB

Inventor： Johan Backlund ,  Martin Wildheim

IPC: B23K15/00 ,  G01T1/29 ,  B29C64/153 ,  B33Y50/00 ,  H01J37/305 ,  B29C64/20 ,  B22F10/28 ,  B22F12/90 ,  B22F10/31 ,  B22F12/52 ,  B22F12/55 ,  B22F10/32 ,  B22F10/36 ,  B33Y10/00 ,  B33Y50/02 ,  H01J37/30

CPC classification number: B23K15/0013 ,  B22F10/28 ,  B22F10/31 ,  B22F12/90 ,  B23K15/002 ,  B23K15/0086 ,  B29C64/153 ,  B29C64/20 ,  B33Y50/00 ,  G01T1/29 ,  H01J37/305 ,  B22F10/32 ,  B22F10/36 ,  B22F12/52 ,  B22F12/55 ,  B33Y10/00 ,  B33Y50/02 ,  H01J37/3002 ,  H01J2237/2445 ,  H01J2237/30433 ,  H01J2237/30472 ,  Y02P10/25

Abstract: A standard reference plate is configured for insertion into an additive manufacturing apparatus for calibrating an electron beam of the additive manufacturing apparatus. The standard reference plate includes a lower plate and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate including a plurality of holes. A predetermined hollow pattern is provided inside the holes, and a spacing between the holes and the size of the holes and a distance between the upper plate and the lower plate and a position of an x-ray sensor of the additive manufacturing apparatus with respect to the standard reference plate are arranged so that x-rays emanating from the lower plate, when the electron beam is passing through a hollow part of the hollow pattern, will not pass directly from the lower plate through any one of the holes to the x-ray sensor.

公开(公告)号：US20220395904A1

公开(公告)日：2022-12-15

申请号：US17348312

申请日：2021-06-15

Applicant: ARCAM AB

Inventor： Tomas Lock ,  Björn Löfving

IPC: B22F10/31 ,  B23K15/00 ,  G01J5/00 ,  G01J5/20 ,  B33Y30/00 ,  B33Y50/00 ,  B22F12/41 ,  B22F10/80

Abstract: Devices, systems, and methods for calibrating for an electron beam additive manufacturing system. The electron beam manufacturing system includes electron beam guns. A calibration system includes an optical pyrometer. The optical pyrometer captures thermal radiation emitted from raw material. An analysis component is communicatively coupled to the optical pyrometer. The analysis component is programmed to determine calibration parameters from information from the optical pyrometer and a phase transition temperature.

公开(公告)号：US11517964B2

公开(公告)日：2022-12-06

申请号：US16548094

申请日：2019-08-22

Applicant: Arcam AB

Inventor： Ulric Ljungblad

IPC: B22F10/20 ,  B29C64/153 ,  B29C64/268 ,  B33Y10/00 ,  B33Y50/02 ,  B22F10/30

Abstract: A method for forming a three-dimensional article through successive fusion of parts of a powder bed comprising: providing a model of the three dimensional article, applying a first powder layer on a work table, directing an energy beam over the work table causing the first powder layer to fuse in selected locations according to the model to form a first cross section of the three-dimensional article, applying a second powder layer on the work table, directing the energy beam over the work table causing the second powder layer to fuse in selected locations according to the model to form a second cross section of the three-dimensional article, wherein the second layer is bonded to the first layer, detecting a local thickness in at least two positions in at least the second powder layer, varying an energy beam parameter depending on the detected local thickness of the second powder layer.

公开(公告)号：US20220380130A1

公开(公告)日：2022-12-01

申请号：US17329967

申请日：2021-05-25

Applicant: ARCAM AB

Inventor： Karl Hansson ,  Peter Karlsson

IPC: B65G27/12 ,  B22F12/50 ,  B65G27/02

Abstract: Raw material devices, systems that incorporate raw material delivery devices, and methods of supplying raw material using the raw material devices. A raw material delivery device includes a hollow body comprising a first end and a second end, the second end disposed above the first end in a system vertical direction, an inlet disposed at the first end of the hollow body, an outlet disposed at the second end of the hollow body, and a stepped passageway disposed within the hollow body between the inlet and the outlet. The stepped passageway is configured to deliver raw material via one or more steps from the inlet to the outlet.